Results 41 to 50 of about 116,124 (306)

Differentiation of Monofloral Honey Using Volatile Organic Compounds by HS-GCxIMS

Molecules, 2022
Honey is a natural product and can be described by its botanical origin, determined by the plants from which the bees collect nectar. It significantly influences the taste of honey and is often used as a quality criterion.
Hannah Schanzmann, Alexander L. R. M. Augustini, Daniel Sanders, Moritz Dahlheimer, Modestus Wigger, Philipp-Marius Zech, Stefanie Sielemann   +6 more
doaj   +1 more source

Scaling-up vaccine production: implementation aspects of a biomass growth observer and controller [PDF]

, 2009
This study considers two aspects of the implementation of a biomass growth observer and specific growth rate controller in scale-up from small- to pilot-scale bioreactors towards a feasible bulk production process for whole-cell vaccine against whooping ...
Boxtel, A.J.B., van, IJssel, J., van den, Pol, L.A., van der, Soons, Z.I.T.A., Straten, G., van   +4 more
core   +2 more sources

Determination of citrate content in specialty paper based on headspace gas chromatography

Frontiers in Chemistry
A method for determining citrate content in specialty paper using headspace gas chromatography (HS-GC) is proposed. This method is based on the reaction between sodium citrate and potassium permanganate under acidic conditions, which generates CO2.
Qiyu He, Baoshan Yue, Xinruitong Liu, Hongyue Zhu, Zhenhua Yu, Ying Zhang, Cong Gao, Wei Chen, Yingchun Luo, Jiao Xie, Yi Dai   +10 more
doaj   +1 more source

Monitoring In Vitro and In Vivo Aroma Release of Espresso Coffees with Proton-Transfer-Reaction Time-of-Flight Mass Spectrometry

Applied Sciences, 2022
This work presents in vitro and in vivo aroma release analysis of three espresso coffees carried out by PTR-ToF-MS headspace and nosespace analysis, respectively. The products were C.
Andrea Romano, Luca Cappellin, Sara Bogialli, Paolo Pastore, Luciano Navarini, Franco Biasioli   +5 more
doaj   +1 more source

Mental Health Outcomes for Young People Accessing Individual Placement Support Services: A Cohort Study

Journal of Primary Care & Community Health
Objective: Mental health problems and vocational disengagement are often linked for young people in a self-reinforcing cycle. Integrated Individual Placement and Support (IPS) services can help to not only overcome educational/vocational challenges but ...
Nic Telford, Sabina Albrecht, Alice Wilkin, Carolyn Watts, Debra Rickwood   +4 more
doaj   +1 more source

A simple and rapid method for urinary acetone analysis by headspace/gas chromatography

Química Nova, 2007
Urinalysis of acetone is important to monitor workers occupationally exposed to acetone and/or isopropanol, as well as in diagnosis of some diseases related to lipid metabolism impairment.
Danielle Palma de Oliveira, Maria Elisa Pereira Bastos de Siqueira   +1 more
doaj   +1 more source

Analysis of volatile organic compounds [PDF]

, 1977
An apparatus and method are described for reproducibly analyzing trace amounts of a large number of organic volatiles existing in a gas sample.
Zlatkis, A.
core   +1 more source

Incomplete Wood-Ljungdahl pathway facilitates one-carbon metabolism in organohalide-respiring Dehalococcoides mccartyi. [PDF]

, 2014
The acetyl-CoA "Wood-Ljungdahl" pathway couples the folate-mediated one-carbon (C1) metabolism to either CO2 reduction or acetate oxidation via acetyl-CoA.
Alvarez-Cohen, Lisa, Bill, Markus, Brisson, Vanessa L, Conrad, Mark E, Feng, Xueyang, Men, Yujie, Tang, Yinjie J, Yi, Shan, Zhuang, Wei-Qin   +8 more
core   +1 more source

Flexible Chemiresistive Chitosan‐Glycerol Sensors on Laser‐Induced Graphene Electrodes for Room‐Temperature Ammonia Detection

Advanced Materials Technologies, EarlyView.
Flexible Chitosan‐glycerol sensor integrated with porous laser‐induced graphene (LIG) electrodes enable room‐temperature chemiresistive detection of ammonia (NH3) and proof‐of‐concept detection of fish spoilage. ABSTRACT We report a metal‐free sensor platform combining laser induced graphene (LIG) electrodes with drop‐deposited, glycerol‐plasticized ...
Mintesinot Tamiru Mengistu, Richard Murray, Cara‐Lena Nies, Cathal Larrigy, Martina Piletti, Jahidul Islam, Daniela Iacopino, Eileen Hurley, Michael Nolan, Aidan J. Quinn   +9 more
wiley   +1 more source

Effects of caffeic acid and bovine serum albumin in reducing the rate of development of rancidity in oil-in-water and water-in-oil emulsions [PDF]

, 2011
The antioxidant properties of caffeic acid and bovine serum albumin in oil-in-water and water-in-oil emulsions were studied. Caffeic acid (5 mmol/kg emulsion) showed good antioxidant properties in both 30% sunflower oil-in-water (OW) and 20% water-in ...
Conde, Enma, Dominguez, Herminia, Gordon, Micheal H., Moure, Andres   +3 more
core   +1 more source